2 files changed, 16 insertions, 0 deletions
diff --git a/src/vppinfra/vector_avx2.h b/src/vppinfra/vector_avx2.h
index 482bdd515c9..8cc1d77d63c 100644
--- a/src/vppinfra/vector_avx2.h
+++ b/src/vppinfra/vector_avx2.h
@@ -132,6 +132,16 @@ _(i8x16, i64x4, epi8_epi64)
 #undef _
 /* *INDENT-ON* */
 
+static_always_inline u64x4
+u64x4_byte_swap (u64x4 v)
+{
+  u8x32 swap = {
+    7, 6, 5, 4, 3, 2, 1, 0, 15, 14, 13, 12, 11, 10, 9, 8,
+    7, 6, 5, 4, 3, 2, 1, 0, 15, 14, 13, 12, 11, 10, 9, 8,
+  };
+  return (u64x4) _mm256_shuffle_epi8 ((__m256i) v, (__m256i) swap);
+}
+
 static_always_inline u32x8
 u32x8_byte_swap (u32x8 v)
 {
diff --git a/src/vppinfra/vector_neon.h b/src/vppinfra/vector_neon.h
index 14930d664d5..d80c691e3d9 100644
--- a/src/vppinfra/vector_neon.h
+++ b/src/vppinfra/vector_neon.h
@@ -103,6 +103,12 @@ u16x8_byte_swap (u16x8 v)
   return (u16x8) vrev16q_u8 ((u8x16) v);
 }
 
+static_always_inline u32x4
+u32x4_byte_swap (u32x4 v)
+{
+  return vrev64q_u32 (v);
+}
+
 static_always_inline u8x16
 u8x16_shuffle (u8x16 v, u8x16 m)
 {